Not trying to promote another site, but at the link below are some further reviews of the Sonic X10. Unfortunately for me, it appears there may be an inherent problem with the quality of the speedometer. I believe these are built in China so it could be poor quality electronics, poor workmanship or simply poor design, or a combination of all. Regardless, the concept is real. It’s effective and a genuinely useful training aid. If they get the speedometer working effectively and undertake some extended quality testing and trials that would be great.
What would extend quality testing look like? Hank Haney suggests 100 swings a day to help improve your swing. I got less than 50 swings from my X10 before LCD failure. If I followed Hanks plan using the X10 and did it 5 days per week, that would be 500 swings per week. Over 12 months (usual warranty time), you’d expect that this could survive 26,000 swings at that rate. 2 years, 52,000 swings. That’s a lot of use and a lot of strain on electronics so using cheap components won’t cut it.
The tool has actually improved my swing speed through improved lag and improved my release. It’s such a shame the Speedo can’t cope with the physical forces at play. The speedo is a good source of instant feedback and without it, Is like a dog with 3 legs.
Anyway see other reviews here.
http://www.golfwrx.com/forums/topic/1577716-super-sonic-x10-swing-speed-trainer/